Import project into HANA trial instance

I'm trying to import a project into my HANA trial instace using HANA Studio.

I successfully exported an existing project hosted on AWS. When I right click on "Catalog" and do "Import", I get the following error:

SAP DBTech JDBC: [258]: insufficient privilege: Not authorized

Afterwards, I tried to give myself the privileg to be able to import projects, but also failed:

Is says, I'm not authorized to perform the required actions.